Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	12256	1908	16%	0.00	2483	1306	53%	6.4
10 Kinds of People	27700	5631	20%	0.01	4765	3407	72%	5.3
2048	10969	5012	46%	0.00	4886	4157	85%	2.7
2, 4, 6, Greaaat	867	128	15%	0.15	105	42	40%	9.2
3D Printed Statues	14948	6861	46%	0.00	6460	5770	89%	2.2
3D Printer	1025	166	16%	0.00	429	128	30%	8.9
3-Sided Dice	2951	240	8%	0.00	485	168	35%	8.8
4 thought	13014	4460	34%	0.00	4248	3580	84%	2.8
A1 Paper	6909	2084	30%	0.00	2071	1650	80%	3.7
Aa	174	123	71%	0.01	48	34	71%	5.6 - 7.9
Aaah!	37409	17538	47%	0.00	15806	14758	93%	1.5
Abandoned Animal	2666	592	22%	0.03	681	500	73%	5.4
ABC	20679	9367	45%	0.00	8903	8073	91%	1.8
Ab Initio	2187	351	16%	0.08	298	187	63%	7.5
Above Average	13640	5652	41%	0.00	5445	4884	90%	2.2
A+B Problem	9985	989	10%	0.03	1421	470	33%	8.4
A Brief Gerrymander	552	109	20%	0.11	103	50	49%	9.0
Abstract Art	469	155	33%	0.00	131	95	73%	6.5
Abstract Painting	1189	472	40%	0.00	415	336	81%	4.2
Absurdistan Roads II	710	238	34%	0.00	241	158	66%	7.1
Absurdistan Roads III	1866	529	28%	0.02	493	376	76%	5.7
Access Points	541	181	33%	0.01	172	134	78%	5.8
Accounting	2116	589	28%	0.01	534	381	71%	4.4
A Classy Problem	13053	3403	26%	0.01	2962	2309	78%	4.5
ACM Contest Scoring	8731	5445	62%	0.00	4863	4599	95%	1.5
Add 'Em Up!	2763	651	24%	0.01	678	483	71%	5.1
Adding Words	14906	3661	25%	0.00	3430	2685	78%	3.9
Add Two Numbers	5606	3724	66%	0.00	3505	3373	96%	1.3
A Different List Game	7563	524	7%	0.00	1002	192	19%	9.3
A Different Problem	42318	15619	37%	0.00	14286	12367	87%	2.7
Adjoin the Networks	2790	704	25%	0.00	609	485	80%	5.7
Administrative Difficulties	1799	360	20%	0.03	382	260	68%	6.3
Ads	874	92	11%	0.00	170	66	39%	5.1
Advanced Causal Measurements	129	41	32%	0.10	42	32	76%	7.4
Adventure Begins	364	115	32%	0.06	115	87	76%	6.0
Adventures in Moving -- Part IV	1802	403	22%	0.00	348	285	82%	5.0
A Favourable Ending	2167	578	27%	0.00	534	413	77%	4.5
A Feast For Cats	3547	1331	38%	0.00	971	840	87%	3.4
A Flea on a Chessboard	1001	212	21%	0.01	210	150	71%	5.3
A Horse Shoe-In	129	13	10%	0.27	21	9	43%	9.2
AI Jeopardy	600	80	13%	0.02	79	52	66%	6.3
Air Conditioned Minions	7476	2196	29%	0.00	2194	1693	77%	3.9
Airline Hub	2372	526	22%	0.01	472	282	60%	6.7
Airport Coffee	1381	281	20%	0.04	260	184	71%	6.8
Airport Construction	3827	476	12%	0.02	421	223	53%	7.9
Airport Logistics	71	19	27%	0.00	25	18	72%	7.0
Airports	683	208	30%	0.11	184	137	74%	5.6
Air Rally	82	0	0%	--	9	0	0%	8.4
Akcija	10640	4795	45%	0.00	4286	3824	89%	2.2
Aladin	884	104	12%	0.10	145	33	23%	8.8
Alchemy	175	34	19%	0.02	45	24	53%	9.0
Alchemy 101	688	214	31%	0.05	196	155	79%	4.0
Alea iacta est	45	16	36%	0.19	20	15	75%	6.6
Alehouse	1054	387	37%	0.02	390	278	71%	5.4
Alex and Barb	1262	439	35%	0.00	514	397	77%	3.5
Alice in the Digital World	6185	1569	25%	0.01	1425	1123	79%	4.2
Alien Codebreaking	317	31	10%	3.23	58	16	28%	8.3
Alien Microwave	249	98	39%	0.00	128	94	73%	6.7
Alien Numbers	3006	1587	53%	0.00	1555	1424	92%	1.9
A List Game	11138	3367	30%	0.00	3246	2746	85%	3.0
All about that base	3389	1344	40%	0.00	1297	1098	85%	3.0
All Different Directions	1743	810	46%	0.00	767	687	90%	2.5
Allergy Test	660	169	26%	0.00	215	107	50%	8.0
All Friends	1171	223	19%	0.00	211	112	53%	8.8
All in the Family	150	34	23%	0.00	49	32	65%	5.9
All is Well	144	38	26%	0.03	37	31	84%	6.2
All Just A Dream	2821	716	25%	0.05	549	419	76%	5.6
All Kill	124	102	82%	0.00	58	51	88%	3.6
Alloys	926	331	36%	0.00	347	287	83%	4.0
All Pairs Shortest Path	14021	2702	19%	0.00	1709	1227	72%	5.8
Almost Perfect	13764	3088	22%	0.00	3155	2509	80%	3.2
Almost Union-Find	10337	1780	17%	0.02	1626	982	60%	6.5
Alphabet	2711	1386	51%	0.00	1320	1120	85%	3.1
Alphabet Animals	8402	1547	18%	0.00	1364	977	72%	6.5
Alphabet Spam	11225	7005	62%	0.00	5957	5730	96%	1.4
Alternating Current	705	687	97%	0.00	120	117	98%	1.4 - 8.3
Alternative Anagram	267	85	32%	0.00	78	56	72%	7.3
Alternative Bracket Notation	240	104	43%	0.00	112	92	82%	5.4
Alto Singing	95	41	43%	0.00	42	39	93%	4.4
Altruistic Amphibians	562	153	27%	0.22	128	94	73%	5.2
Amalgamated Artichokes	5241	2357	45%	0.01	2080	1837	88%	2.6
Amanda Lounges	1952	590	30%	0.03	499	407	82%	5.3
A Mazing!	4048	1050	26%	0.09	411	307	75%	5.5
Amazing Adventures	496	144	29%	0.02	161	116	72%	6.2
Amazing Race	690	167	24%	0.29	151	115	76%	5.5
Ambiguous Result	299	68	23%	0.02	100	63	63%	7.2
Amsterdam Distance	2327	1156	50%	0.00	1170	1004	86%	2.6
A Multiplication Game	1316	540	41%	0.00	581	450	77%	4.3
Anagram Counting	4795	1921	40%	0.00	1856	1561	84%	3.0
Andrew the Ant	528	164	31%	0.05	170	133	78%	4.7
A New Adventure	1552	235	15%	0.00	230	165	72%	5.8
A New Alphabet	14159	6382	45%	0.00	5985	5499	92%	2.0
An I for an Eye	1330	382	29%	0.00	445	329	74%	4.9
Animal Classification	1697	397	23%	0.03	338	226	67%	6.9
An Industrial Spy	2459	1297	53%	0.02	1032	906	88%	3.0
Annoyed Coworkers	585	162	28%	0.03	134	115	86%	4.3
Another Brick in the Wall	4506	2289	51%	0.00	2232	2031	91%	2.1
Another Candies	10656	2973	28%	0.00	2988	2510	84%	2.6
Another Coin Weighing Puzzle	771	209	27%	0.00	146	117	80%	6.2
Another Dice Game	136	84	62%	0.00	83	70	84%	4.5